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Re: [QUESTION] About virtio and eventloop
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [QUESTION] About virtio and eventloop |
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Date: |
Mon, 16 Jan 2023 11:16:09 -0500 |
On Mon, 16 Jan 2023 at 03:20, zhukeqian via <qemu-devel@nongnu.org> wrote:
> And if IO operation is blocked, is vCPU thread will blocked when do
> deactivate?
Yes, blk_drain() is a synchronous function. It blocks until in-flight
I/O has finished. The vcpu thread will be blocked in
virtio_pci_common_write().
Stefan